(19)

(11)

EP 3 424 084 A1

(12)

(43) Date of publication: 09.01.2019 Bulletin 2019/02 (21) Application number: 16753960.0 (22) Date of filing: 20.06.2016

(51) International Patent Classification (IPC):  H01L 31/18(2006.01) (86) International application number: PCT/IB2016/000868 (87) International publication number: WO 2017/149347 (08.09.2017 Gazette 2017/36)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 29.02.2016 IT UB20161142 (71) Applicant: Vismunda S.r.l. 35137 Padova (PD) (IT)	(72) Inventor: SPOTTI, Davide 34126 Trieste (IT) (74) Representative: Osti, Biancamaria  D'Agostini Group Srl Viale Mazzini 142 00195 Roma 00195 Roma (IT)